A nurse is receiving change-of-shift report for a group of clients. Which of the following clients should the nurse plan to assess first?

A. Weakness in the lower extremities is a potential side effect of epidural analgesia, but it is not an immediate life-threatening concern. B. Sinus arrhythmia is often a benign condition, especially in younger individuals, and the client is already being monitored. C. New-onset tachypnea in a client with a hip fracture raises concern for a pulmonary embolism (PE), which is a life-threatening emergency requiring immediate assessment. D. An HbA1c of 7.2% is slightly elevated but does not require urgent intervention.